海上漂浮式风机系泊阻尼试验研究  

Experimental Investigation on Mooring Damping of Offshore Floating Wind Turbines

作　　者：庄杰敏 高一帆 陈嘉豪 任灏 Zhuang Jiemin;Gao Yifan;Chen Jiahaol;Ren Hao(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China;School of Ocean Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广州510663 [2]中山大学海洋工程与技术学院,珠海519082

出　　处：《特种结构》2025年第1期33-38,共6页Special Structures

基　　金：三亚崖州湾科技管理局重大研发项目(SKJC-2020-01-005);广东省自然科学基金(2024A1515012392);广东省海上风电联合基金(2023A1515240042)

摘　　要：系泊阻尼对于漂浮式风机低频运动具有重要的影响作用,然而其形成机理复杂,数值软件往往难以准确预报。为此,本文通过缩尺模型试验的方法,利用两种不同链径的锚链缩尺模型,研究服役于40m浅水区域的半潜型海上漂浮式风机锚链系统的系泊阻尼特性。试验研究结果表明,系泊锚链的截面尺寸越大,锚链数量越多,系泊阻尼越大;此外,如果将单根锚链的阻尼系数乘以对应的锚链数量得到锚链系统总阻尼,是偏高估的做法;系泊锚链对平台纵荡、垂荡和纵摇自由度具有不同的阻尼特性,纵荡自由度方向的锚链阻尼最大,最高甚至可达无系泊浮体纵荡运动阻尼值的5%。Mooring damping plays a critical role in the low-frequency motion of floating wind turbines.However,due to its underlying complex mechanisms,numerical simulation software often fails to provide accurate predictions.To address this challenge,scaled model tests are conducted in this paper using two types of mooring chains with different chain diameters to investigate the mooring damping characteristics of a semi-submersible offshore floating wind turbine operating in a 40-meter shallow water region.The results indicate that mooring damping increases with both the cross-sectional size and the number of mooring chains.However,estimating the total damping of a mooring system by multiplying the measured damping of a single chain by the number of chains leads to overestimation.Additionally,mooring chains exhibit different damping effects across surge,heave,and pitch degrees of freedom,with the surge direction showing the highest damping.In certain cases,the mooring damping in the surge direction reaches up to 5%of the surge motion damping of an unmoored floating structure.

关 键 词：海上浮式风机 浅水 系泊阻尼 模型试验 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] TU279.7[天文地球—海洋科学]